[O Trovador]

Perhaps a little off-topic but something I'd like to get a better understanding of. I agree that Spain couldn't exist without Basques, or the Catalans, or any of the Spanish regions. I mean, Hispanism makes perfect sense to me and it has since before I even knew that there was such an ideology. It just feels natural, but there are a couple things I don't understand.

Firstly, hasn't Spain existed perfectly fine without Portugal? Sure, there was constant conflict with Castilians and numerous attempts to conjoin Portugal with Spain, but, aside from a brief period in the XVIth and XVIIth centuries, Portugal has remained separate for nearly a millennia. So can the same logic that Spain can't exist without certain territories be applied to Portugal as well?

Secondly, what's the point of such a reunion? It seems natural for Portugal to be a part of Spain as it already is on the cultural, ethnic, and geographic, etc. levels. But Portugal's sovereignty obviously came about for a reason, and, at least from my experience, the majority of Portuguese reject the notion of a reunion with Spain. Even historically this notion was ultimately rejected. I guess what I'm asking is, can the sovereignty of Portugal be proved to be fallacious and can the sacrifice of over 800 years of sovereignty be justified?

Finally, what will happen to Portuguese territory? Will it be separated into Gallaecia Bracarense, Lusitania, etc.? Or will it remain as it is now?

I hope I don't come across as though I'm contesting Hispanism. There's just certain things I really don't understand and would like to learn more about. By all means, if this post is off-topic, I'll completely understand if it's deleted.